Fill Up That Rental Car

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Don't forget to fill up the gas tank when you return your rental car.

You promised to return your rental car with a full tank of gas? Whatever you do, don't forget. Otherwise, you can expect to pay sky-high prices to have the rental agency do it for you.

See also: Foreign country car rentals.

A recent survey by USA Today found that agencies at 13 large U.S. airports were charging up to $9.29 per gallon.

Joan Rattner Heilman writes about good deals and where to find them.